# Copyright (c) Facebook, Inc. and its affiliates.
# Copyright 2020 Huawei Technologies Co., Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# --------------------------------------------------------
# Copyright (c) OpenMMLab. All rights reserved.

from .builder import DATASETS
from .custom import CustomDataset


@DATASETS.register_module()
class ChaseDB1Dataset(CustomDataset):
    """Chase_db1 dataset.

    In segmentation map annotation for Chase_db1, 0 stands for background,
    which is included in 2 categories. ``reduce_zero_label`` is fixed to False.
    The ``img_suffix`` is fixed to '.png' and ``seg_map_suffix`` is fixed to
    '_1stHO.png'.
    """

    CLASSES = ('background', 'vessel')

    PALETTE = [[120, 120, 120], [6, 230, 230]]

    def __init__(self, **kwargs):
        super(ChaseDB1Dataset, self).__init__(
            img_suffix='.png',
            seg_map_suffix='_1stHO.png',
            reduce_zero_label=False,
            **kwargs)
        assert self.file_client.exists(self.img_dir)
